Alert archive / New Jersey / Heat Advisories in 2019
Heat Advisory 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this heat advisory at Aug 18, 2019, 3:32 AM EDT for 11 counties in New Jersey; 8 counties in Pennsylvania; New Castle County, Delaware. It took effect at Aug 19, 2019, 10:00 AM EDT. It was in force for 56 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2019, 3:32 AM EDT (07:32 UTC)
- In effect from
- Aug 19, 2019, 10:00 AM EDT
- Expired
- Aug 21, 2019, 6:07 PM EDT
- In force
- 56 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 07:36 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 7.5 hours before the alert went out and 195 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1137 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The text
As transmitted.
232 WWUS71 KPHI 180732 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 332 AM EDT Sun Aug 18 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-182015- /O.UPG.KPHI.EH.A.0003.000000T0000Z-190821T2300Z/ /O.NEW.KPHI.HT.Y.0004.190819T1400Z-190821T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 332 AM EDT Sun Aug 18 2019 ...HEAT ADVISORY IN EFFECT FROM 10 AM MONDAY TO 8 PM EDT TUESDAY... The National Weather Service in Mount Holly has issued a Heat Advisory, which is in effect from 10 AM Monday to 8 PM EDT Tuesday. The Excessive Heat Watch is no longer in effect. * HEAT INDEX VALUES...Up to 103 due to temperatures in the mid 90s, and dewpoints in the lower 70s. * TIMING...The highest heat index values are expected Monday afternoon and again Tuesday afternoon. The heat and humidity may last into Wednesday. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ Johnson
11 follow-up statements
137 WWUS71 KPHI 181917 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 317 PM EDT Sun Aug 18 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-191000- /O.CON.KPHI.HT.Y.0004.190819T1400Z-190821T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 317 PM EDT Sun Aug 18 2019 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM MONDAY TO 8 PM EDT TUESDAY... * HEAT INDEX VALUES...Up to 101 due to temperatures in the lower 90s, and dewpoints in the lower 70s. * TIMING...The highest heat index values will occur on Monday and Tuesday afternoons. The heat and humidity may last into Wednesday. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ MPS
483 WWUS71 KPHI 190711 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 311 AM EDT Mon Aug 19 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-192000- /O.CON.KPHI.HT.Y.0004.190819T1400Z-190821T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 311 AM EDT Mon Aug 19 2019 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM EDT TUESDAY... * HEAT INDEX VALUES...Up to 101 due to temperatures in the lower 90s, and dewpoints in the lower 70s. * TIMING...The highest heat index values will occur this afternoon and Tuesday afternoon. The heat and humidity may last into Wednesday. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ SFJ
227 WWUS71 KPHI 191340 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 940 AM EDT Mon Aug 19 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-200000- /O.CON.KPHI.HT.Y.0004.190819T1400Z-190821T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 940 AM EDT Mon Aug 19 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * HEAT INDEX VALUES...100 to 104 due to temperatures in the low to mid 90s, and dewpoints in the lower 70s. * TIMING...The highest heat index values will occur this afternoon and again Tuesday afternoon. The heat and humidity may last into Wednesday. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$
941 WWUS71 KPHI 191421 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 1021 AM EDT Mon Aug 19 2019 NJZ007>010-012-013-020-027-PAZ060>062-101-103-105-192300- /O.EXB.KPHI.HT.Y.0004.000000T0000Z-190819T2300Z/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Ocean- Southeastern Burlington-Berks-Lehigh-Northampton-Western Chester- Western Montgomery-Upper Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Jackson, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 1021 AM EDT Mon Aug 19 2019 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING... The National Weather Service in Mount Holly has issued a Heat Advisory, which is in effect until 7 PM EDT this evening. * HEAT INDEX VALUES...Around 100 due to temperatures in the lower 90s, and dewpoints in the lower to mid 70s. * TIMING...The heat index values will peak between about 1 PM and 5 PM today, however any shower or thunderstorm that develops will provide some local relief. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-200100- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190821T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 1021 AM EDT Mon Aug 19 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * HEAT INDEX VALUES...100 to 104 due to temperatures in the lower to mid 90s, and dewpoints in the lower to mid 70s. * TIMING...The highest heat index values will occur this afternoon and again Tuesday afternoon. Any shower or thunderstorm that develops will provide some local relief. The dangerous heat and humidity may last into Wednesday. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ Gorse
568 WWUS71 KPHI 191926 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 326 PM EDT Mon Aug 19 2019 NJZ007>010-012-013-020-027-PAZ060>062-101-103-105-192300- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190819T2300Z/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Ocean- Southeastern Burlington-Berks-Lehigh-Northampton-Western Chester- Western Montgomery-Upper Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Jackson, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 326 PM EDT Mon Aug 19 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... * HEAT INDEX VALUES...Around 100 due to temperatures in the lower 90s, and dewpoints in the lower to mid 70s. * TIMING...The rest of this afternoon. A few showers or thunderstorms may provide some local relief into this evening. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-200730- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190821T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 326 PM EDT Mon Aug 19 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * HEAT INDEX VALUES...100 to 105 this afternoon due to temperatures in the lower to mid 90s, and dewpoints in the lower to mid 70s. Around 100 Tuesday afternoon with temperatures in the lower 90s and dew points around 70. * TIMING...The rest of this afternoon, then again Tuesday afternoon. Any shower or thunderstorm will provide some local relief. The dangerous heat and humidity may last into Wednesday. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ Gorse
220 WWUS71 KPHI 192257 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 657 PM EDT Mon Aug 19 2019 NJZ007>010-012-013-020-027-PAZ060>062-101-103-105-200000- /O.EXP.KPHI.HT.Y.0004.000000T0000Z-190819T2300Z/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Ocean- Southeastern Burlington-Berks-Lehigh-Northampton-Western Chester- Western Montgomery-Upper Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Jackson, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 657 PM EDT Mon Aug 19 2019 ...HEAT ADVISORY WILL EXPIRE AT 7 PM EDT THIS EVENING... $$ DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-201200- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190821T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 657 PM EDT Mon Aug 19 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * HEAT INDEX VALUES...Up to 98 due to temperatures in the lower 90s, and dewpoints in the lower 70s. * TIMING...Tuesday afternoon. Any shower or thunderstorm will provide some local relief. The dangerous heat and humidity may last into Wednesday. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$
289 WWUS71 KPHI 200733 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 333 AM EDT Tue Aug 20 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-202200- /O.EXT.KPHI.HT.Y.0004.000000T0000Z-190822T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 333 AM EDT Tue Aug 20 2019 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * HEAT INDEX VALUES...Around 100 due to temperatures in the lower 90s, and dewpoints in the lower 70s. * TIMING...Today through Wednesday. Any shower or thunderstorm will provide some local relief. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$
391 WWUS71 KPHI 201958 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 358 PM EDT Tue Aug 20 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-211000- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190822T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 358 PM EDT Tue Aug 20 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * HEAT INDEX VALUES...Around 100 during the afternoon and early evening hours due to temperatures in the lower 90s, and dew point readings in the lower 70s. * TIMING...Through Wednesday. Any showers or thunderstorms will provide some brief local relief. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or late evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$
934 WWUS71 KPHI 210723 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 323 AM EDT Wed Aug 21 2019 NJZ010-012-013-020-027-211930- /O.EXB.KPHI.HT.Y.0004.190821T1600Z-190822T0000Z/ Somerset-Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Somerville, New Brunswick, Freehold, Jackson, and Wharton State Forest 323 AM EDT Wed Aug 21 2019 ...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING... The National Weather Service in Mount Holly has issued a Heat Advisory, which is in effect from noon today to 8 PM EDT this evening. * HEAT INDEX VALUES...Around 100 during the afternoon and early evening hours due to temperatures in the lower 90s, and dew point readings in the lower 70s. * TIMING...This afternoon and early evening. Any showers or thunderstorms will provide some brief local relief. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-211930- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190822T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 323 AM EDT Wed Aug 21 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * HEAT INDEX VALUES...Around 100 during the afternoon and early evening hours due to temperatures in the lower 90s, and dew point readings in the lower 70s. * TIMING...Through this afternoon and evening. Any showers or thunderstorms will provide some brief local relief. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or late evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ Robertson
710 WWUS71 KPHI 211632 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 1232 PM EDT Wed Aug 21 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-220000- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190822T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 1232 PM EDT Wed Aug 21 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * HEAT INDEX VALUES...Around 100 during the afternoon and early evening hours due to temperatures in the lower 90s, and dew point readings in the lower 70s. * TIMING...Through this afternoon and evening. Any showers or thunderstorms will provide some brief local relief. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or late evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$ NJZ010-012-013-020-027-220000- /O.CON.KPHI.HT.Y.0004.000000T0000Z-190822T0000Z/ Somerset-Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Somerville, New Brunswick, Freehold, Jackson, and Wharton State Forest 1232 PM EDT Wed Aug 21 2019 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * HEAT INDEX VALUES...Around 100 during the afternoon and early evening hours due to temperatures in the lower 90s, and dew point readings in the lower 70s. * TIMING...This afternoon and early evening. Any showers or thunderstorms will provide some brief local relief. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, call 9 1 1. && $$
487 WWUS71 KPHI 212207 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 607 PM EDT Wed Aug 21 2019 DEZ001-NJZ010-012-013-015-017>020-027-PAZ070-071-102-104-106- 212315- /O.CAN.KPHI.HT.Y.0004.000000T0000Z-190822T0000Z/ New Castle-Somerset-Middlesex-Western Monmouth-Mercer-Gloucester- Camden-Northwestern Burlington-Ocean-Southeastern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Lower Bucks- Including the cities of Wilmington, Somerville, New Brunswick, Freehold, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Wharton State Forest, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 607 PM EDT Wed Aug 21 2019 ...HEAT ADVISORY IS CANCELLED... The National Weather Service in Mount Holly has cancelled the Heat Advisory. Temperatures have cooled with the passage of showers and thunderstorms, therefore, the advisory is no longer necessary. $$
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this heat advisory went out at Aug 17, 6:28 PM EDT, 9 hours 4 minutes earlier.
Area forecast discussion, Aug 17, 6:28 PM EDT, 9 hours 4 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
628 PM EDT Sat Aug 17 2019
.SYNOPSIS...
A Bermuda High will build off the East Coast through the remainder
of the weekend and into the middle of next week. With the mid-
Atlantic on its northwest periphery, a warm, humid, and unsettled
pattern will develop. A weak upper level disturbance will pass to
our north on Sunday. A weak frontal boundary will approach late
Monday and stall over the region by Tuesday. A stronger cold front
will approach on Thursday and move offshore by Friday. High pressure
will build in for the end of the week.
&&
.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
Radar and surface observations indicate that the sea breeze
front has advanced to the Delaware River, and the combination
sea breeze and Delaware Bay breeze has encroached into
Maryland's eastern shore. These breezes will dissipate as the
sun sets this evening. Shower/thunderstorm activity across the
CWA is also waning, but a few widely scattered hit-or-miss
showers are still possible this evening, so have reduced chance
PoPs to slight chance in the south and have kept chance PoPs in
the north as remnants from the decaying MCS may still clip this
area overnight. Have also tweaked temperatures to match current
conditions. Otherwise...previous forecast is on track.
...Previous Near Term Discussion below...
Stationary front remains south of Delmarva, and low pressure will
ride along this boundary and out to sea. Meanwhile, some mid-level
shortwave energy will pass through the region this evening.
With a prolonged period with high temperatures of at least 90
degrees expected into the middle of next week, along with a heat
index of at least 100 degrees on Monday and Tuesday, this meets the
criteria for an Excessive Heat Warning for the urban corridor from
Trenton to Philly to Wilmington. Will issue an Excessive Heat Watch
through Wednesday, and depending on how things develop, future
shifts will either convert to a Heat Advisory or upgrade to an
Excessive Heat Warning.
Onshore flow continues to usher a warm and humid airmass into the
region with surface dewpoints in the upper 60s to low 70s and highs
in the 80s to near 90. Surface based CAPE values are quite high,
ranging from 2500-3000 J/kg north and west of the Fall Line to 3000-
3500 J/kg south towards Delmarva. With that weak shortwave energy
passing through this region this evening, showers and thunderstorms
have fired up across portions of eastern Pennsylvania and are moving
into far western portions of the forecast area. Most of the high-res
guidance is indicating little in the way of thunderstorm
development, so will carry likely PoPs early for the western zones,
and otherwise chance/slight chance. PWATs are over 1.5 inches, and
close to 1.75 inches in some areas. In addition, Effective Shear
ranges from 35-40 kt. Some locally heavy rain and gusty winds are
possible in the strongest of the storms.
With loss of diurnal heating, most activity tapers off fairly
quickly after sunset.
Quite warm and humid overnight with fog developing once again. Winds
take on a more southerly component, and dewpoints will rise towards
the mid 70s overnight.
The remnants of a decaying MCS are over the southern Great Lakes and
moving into the Ohio Valley. This should take a track north of the
local area, but there is the potential for showers and thunderstorms
from this system during the overnight hours, especially for northern
zones. Will carry chance PoPs for the northern zones for the late
night hours to cover this potential.
&&
.SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/...
With a Bermuda high in place, and winds shifting to more of a south-
southwest flow, the heat and humidity make a return to the region on
Sunday. Any lingering showers and thunderstorms will taper off and
move out of the region in the morning. Dewpoints climb into the mid
70s through the morning, and then there may be some mixing in the
afternoon to knock those dewpoints down a couple of degrees in the
afternoon. With highs in the upper 80s to lo 90s, the heat index
will at least approach 100 for portions of Delmarva and the urban
corridor.
Another decaying MCS, along with some mid-level shortwave energy,
with pass north of the region in the afternoon. Another round of
showers and thunderstorms are possible, mainly for the northern
zones.
&&
.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
Overview...
An unsettled pattern looks to take hold for much of the long term
period as multiple disturbances pass through a hot and humid air
mass along the northwest periphery of the Bermuda high and the
subtropical ridge. Not expecting any washouts over the next several
days, but it looks to be a favorable pattern for a steady dose of
opportunities for convection. Hot temperatures will also be a story
for the first half of the coming week as southwesterly flow will
draw warm and humid air into the region. The heat will peak on
Monday and Tuesday but it will remain warm and humid into at least
Wednesday. A strong cold front is likely to move through towards
Thursday, which should usher in a cooler and much drier air mass
towards the end of the week and potentially into next weekend.
Dailies...
Sunday night-Monday night... There may be some lingering showers or
storms early Sunday night, but they should tend to diminish with
time. Otherwise, it should be a warm and muggy overnight,
potentially with some fog and low cloud concerns as well. A
continued southwesterly flow around the periphery of the offshore
high pressure will lead to additional WAA on Monday, and
temperatures will jump a few degrees from Sunday. Widespread low 90s
are likely with some mid 90s possible in the urban corridor. With
humidity also remaining elevated, heat index values will likely
exceed 100, and either a Heat Advisory or Excessive Heat Warning
will be needed for the urban corridor depending on how exactly the
numbers evolve in comparison with criteria. Agree with previous
forecaster that Monday looks like it might actually be fairly quiet
for precipitation, at least for most of the day and in most of the
area. Low pressure will be tracking far to our northwest over
Ontario, but will drag a weak frontal boundary into our vicinity
late in the day. This could lead to a few late afternoon or evening
showers and storms especially in northern and western areas. This
activity could continue into the first half of what should be a warm
and muggy overnight, but again, expecting coverage to be fairly
limited.
Tuesday-Wednesday night... Chances for convection increase during
the midweek period. A shortwave, which may be convectively enhanced,
approaches on Tuesday. The frontal boundary from Monday, while weak
and losing definition, will also likely stall overhead. With the
shortwave approaching, this should help kick off scattered showers
and storms Tuesday afternoon and evening. Shear does not look very
impressive, but instability should be fairly strong so some strong
to severe storms are possible. Locally heavy rain may also be a
concern given the weak wind fields. Guidance also indicates
potential for convection to continue well into the night on Tuesday.
Wednesday, a cold front will be starting to approach but will remain
to our west. However, a pre-frontal trough will likely serve as a
trigger for another round of convection on Wednesday. Wind fields,
while not extreme, are stronger on Wednesday. Thus the severe
weather risk may be greater that day. However, it is possible cloud
cover may be more widespread Wednesday, which could limit
instability, so it is too early to be confident on severe weather.
Hot weather also continues into midweek with Tuesday looking similar
to Monday and with Wednesday perhaps slightly cooler due to the
additional cloud cover but still warm and humid. Similar to Monday,
Tuesday's conditions will necessitate the conversion of the
Excessive Heat Watch to either a Warning or a Heat Advisory. With
humid air remaining in place, the overnights will continue to be
warm and muggy as well with little relief from the daytime heat.
Thursday... A more robust trough will be swinging into the Great
Lakes by Wednesday night into Thursday. Ahead of it, a strong cold
front will push through our region. Timing of the front is a little
unclear, as the latest GFS is considerably faster than the latest EC
(not uncommon). Naturally the frontal passage will provide an
additional opportunity for convection. The extent of any severe
weather threat will likely depend mainly on frontal timing, with the
slower EC solution more likely to produce stronger storms since
daytime heating would be maximized. In any areas where the front
moves through early enough, a drying westerly flow will develop.
Ahead of it, such as over Delmarva, it will remain warm and muggy.
Friday-Saturday... If the current expected timing of features holds
up, we should see cooler and drier air for the end of the week as an
upper level trough and surface high move overhead behind the front.
This should yield a couple of very nice days. Expecting the drier
air to probably be short lived as the upcoming pattern looks like it
may repeat itself heading into the following week.
&&
.AVIATION /22Z SATURDAY THROUGH THURSDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Tonight...Scattered SHRA/TSRA, mainly for KRDG/KABE and the I-95
corridor terminals, possible into this evening. Brief sub-VFR
conditions possible if a storm passes over a given terminal. Will
use VCTS and TEMPO groups for those terminals. Low confidence for
SHRA/TSRA at KMIV/KACY. Otherwise, VFR through this evening, then
MVFR/IFR in fog late tonight. Another round of SHRA/TSRA possible
late in the overnight hours, mainly for KRDG/KABE. SE winds less
than 10 kt, becoming LGT/VRB tonight.
Sunday...Morning fog dissipates to VFR conditions. South winds 5-10
kt. Scattered SHRA/TSRA possible in the afternoon and evening once
again.
Outlook...
Sunday night... Scattered showers and thunderstorms with associated
restrictions are possible for the first half of Sunday night. Patchy
fog may develop later Sunday night. Light southerly winds expected.
Monday-Monday night... Any lingering fog or low clouds should
dissipate early Monday, with conditions turning VFR towards mid-
morning and southwest winds around 5 kt.
Tuesday-Thursday... Prevailing conditions should be VFR, however,
several opportunities will exist for showers and thunderstorms and
associated restrictions. Low clouds and patchy fog also possible
during the overnight periods. Winds will be generally out of the
south or southwest, though may be light and variable on Tuesday and
could turn more westerly by Thursday.
&&
.MARINE...
Conditions remain below Small Craft Advisory levels tonight and
Sunday. Areas of fog near the shore are possible again tonight
through Sunday morning.
Outlook...
Sunday night-Tuesday night... Sub-SCA conditions expected. Southwest
winds around 10 kt. Seas 2 to 3 ft.
Wednesday-Thursday... Sub-SCA conditions are expected to continue,
though winds and seas will increase a bit. Southwest winds gusting
near to above 20 kt with seas 3 to 4 ft.
Rip Currents...
There is a moderate risk for the development of dangerous rip
currents at the New Jersey and Delaware beaches through this evening.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Excessive Heat Watch through Wednesday evening for PAZ070-071-
102-104-106.
NJ...Excessive Heat Watch through Wednesday evening for NJZ015-
017>019.
DE...Excessive Heat Watch through Wednesday evening for DEZ001.
MD...None.
MARINE...None.
&&
Synopsis...O'Brien
Near Term...Miketta/MPS
Short Term...MPS
Long Term...O'Brien
Aviation...MPS/O'Brien/O'Hara
Marine...Miketta/MPS/O'BrienHazardous weather outlook, Aug 17, 3:42 PM EDT, 11 hours 50 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 342 PM EDT Sat Aug 17 2019 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-181945- New Castle-Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- 342 PM EDT Sat Aug 17 2019 ...EXCESSIVE HEAT WATCH IN EFFECT THROUGH WEDNESDAY EVENING... This Hazardous Weather Outlook is for northern Delaware, central New Jersey, southern New Jersey and southeast Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Excessive Heat Watch. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Excessive Heat Watch. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002-003-MDZ008-012-015-019-020-NJZ001-007>010-012-013-016-020>023- 027-PAZ054-055-060>062-101-103-105-181945- Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-Caroline-Sussex- Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Salem- Ocean-Cumberland-Atlantic-Cape May-Southeastern Burlington-Carbon- Monroe-Berks-Lehigh-Northampton-Western Chester-Western Montgomery- Upper Bucks- 342 PM EDT Sat Aug 17 2019 This Hazardous Weather Outlook is for central Delaware, southern Delaware, northeast Maryland, central New Jersey, northern New Jersey, northwest New Jersey, southern New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Sunday through Friday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ004-NJZ014-024>026-181945- Delaware Beaches-Eastern Monmouth-Atlantic Coastal Cape May- Coastal Atlantic-Coastal Ocean- 342 PM EDT Sat Aug 17 2019 This Hazardous Weather Outlook is for southern Delaware, central New Jersey and southern New Jersey. .DAY ONE...This afternoon and tonight. There is a moderate risk for the development of dangerous rip currents at New Jersey and Delaware beaches this afternoon. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-431-450>455-181945- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 342 PM EDT Sat Aug 17 2019 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Sunday through Friday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
In the hours before
Special weather statement, Aug 17, 10:37 PM EDT, 4 hours 55 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
1037 PM EDT Sat Aug 17 2019
NJZ007>009-180300-
Morris-Hunterdon-Warren-
1037 PM EDT Sat Aug 17 2019
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN MORRIS...
NORTHEASTERN HUNTERDON AND EAST CENTRAL WARREN COUNTIES...
At 1036 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Allamuchy-Panther Valley to near Great
Meadows-Vienna. Movement was southeast at 25 mph.
Wind gusts up to 40 mph are possible with these storms.
Locations impacted include...
Hackettstown, Netcong, Oxford, Chester, Califon, Great
Meadows-Vienna, Allamuchy-Panther Valley, Succasunna,
Succasunna-Kenvil, Long Valley, Budd Lake, Beatyestown and
Beattyestown.
This includes Interstate 80 in New Jersey between mile markers 16 and
19, and between mile markers 26 and 28.
If outdoors, consider seeking shelter inside a building.
LAT...LON 4087 7456 4072 7469 4072 7472 4070 7472
4065 7476 4083 7498 4093 7489
TIME...MOT...LOC 0236Z 307DEG 21KT 4090 7485 4083 7492
SFJSpecial weather statement, Aug 17, 10:50 PM EDT, 4 hours 42 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
1050 PM EDT Sat Aug 17 2019
NJZ001-008-180315-
Morris-Sussex-
1050 PM EDT Sat Aug 17 2019
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN MORRIS AND
SOUTHEASTERN SUSSEX COUNTIES...
At 1050 PM EDT, a strong thunderstorm was located near Ogdensburg, or
9 miles east of Newton, moving east at 20 mph.
Wind gusts up to 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Dover, Hopatcong, East Hanover, Lincoln Park, Kinnelon, Boonton,
Butler, Wharton, Rockaway, Mount Arlington, Franklin, Mountain Lakes,
Riverdale, Ogdensburg, Lake Mohawk, Parsippany, Pequannock Township,
Lake Telemark, Green Pond and White Meadow Lake.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 40 and 54.
Interstate 80 in New Jersey between mile markers 34 and 49.
If outdoors, consider seeking shelter inside a building.
LAT...LON 4110 7449 4104 7450 4105 7445 4102 7443
4103 7442 4100 7430 4097 7428 4092 7429
4091 7427 4090 7427 4091 7433 4086 7432
4080 7436 4096 7470 4113 7462
TIME...MOT...LOC 0250Z 292DEG 19KT 4102 7458
SFJSpecial weather statement, Aug 17, 11:19 PM EDT, 4 hours 13 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
1119 PM EDT Sat Aug 17 2019
NJZ008-180345-
Morris-
1119 PM EDT Sat Aug 17 2019
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN MORRIS COUNTY...
At 1119 PM EDT, a strong thunderstorm was located over Mountain
Lakes, or 7 miles north of Morristown, moving east at 15 mph.
Wind gusts up to 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Morristown, Madison, Florham Park, East Hanover, Lincoln Park,
Boonton, Rockaway, Morris Plains, Mountain Lakes, Parsippany,
Pequannock Township, Lake Telemark, White Meadow Lake and Hanover
Township.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 36 and 51.
Interstate 80 in New Jersey between mile markers 37 and 48.
If outdoors, consider seeking shelter inside a building.
LAT...LON 4091 7433 4088 7434 4086 7432 4082 7434
4079 7437 4076 7438 4075 7436 4074 7437
4082 7456 4099 7448 4096 7428 4092 7429
4090 7427
TIME...MOT...LOC 0319Z 289DEG 14KT 4089 7443
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 10:37 PM EDT | Special Weather Statement | PHI | Morris | 23 min |
| Aug 17, 10:50 PM EDT | Special Weather Statement | PHI | Morris | 25 min |
| Aug 17, 11:19 PM EDT | Special Weather Statement | PHI | Morris | 26 min |
| Aug 18, 3:03 PM EDT | Special Weather Statement | PHI | Burlington | 27 min |
| Aug 18, 3:15 PM EDT | Special Weather Statement | PHI | Burlington | 30 min |
| Aug 18, 3:21 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 39 min |
| Aug 18, 3:35 PM EDT | Special Weather Statement | PHI | Burlington | 25 min |
| Aug 18, 4:48 PM EDT | Special Weather Statement | PHI | Somerset | 27 min |
| Aug 18, 4:49 PM EDT | Special Weather Statement | PHI | Warren | 26 min |
| Aug 18, 5:01 PM EDT | Special Weather Statement | PHI | Monmouth | 29 min |
| Aug 18, 5:05 PM EDT | Special Weather Statement | PHI | Hunterdon | 25 min |
| Aug 18, 5:18 PM EDT | Special Weather Statement | PHI | Somerset | 27 min |
| Aug 18, 5:29 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Middlesex, Morris, Somerset, Warren | 2 hr |
| Aug 18, 5:32 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 43 min |
| Aug 18, 5:36 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset | 39 min |
| Aug 18, 5:46 PM EDT | Special Weather Statement | PHI | Warren | 44 min |
| Aug 18, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Warren | 48 min |
| Aug 18, 6:28 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Sussex, Warren | 47 min |
| Aug 18, 6:40 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 54 min |
| Aug 18, 7:09 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 3 hr |
| Aug 17, 8:32 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 73 min |
| Aug 18, 4:22 PM EDT | Special Weather Statement | PHI | Berks | 38 min |
| Aug 18, 4:34 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Montgomery | 41 min |
| Aug 18, 4:36 PM EDT | Special Weather Statement | PHI | Bucks | 24 min |
| Aug 18, 5:01 PM EDT | Areal Flood Advisory | PHI | Berks, Montgomery | 3 hr |
| Aug 18, 5:16 PM EDT | Special Weather Statement | PHI | Berks | 29 min |
| Aug 18, 5:25 PM EDT | Special Weather Statement | PHI | Carbon, Monroe, Northampton | 65 min |
| Aug 18, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 52 min |
| Aug 18, 5:42 PM EDT | Special Weather Statement | PHI | Berks | 48 min |
| Aug 18, 7:03 PM EDT | Special Weather Statement | PHI | Berks | 27 min |
| Aug 18, 7:23 PM EDT | Special Weather Statement | PHI | Berks | 67 min |
| Aug 18, 2:08 PM EDT | Special Weather Statement | PHI | New Castle | 37 min |
| Aug 18, 2:26 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Aug 18, 2:38 PM EDT | Special Weather Statement | PHI | New Castle | 37 min |
| Aug 18, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 45 min |
Nearby
Heat Advisories in New Jersey, 2019Heat Advisories in Pennsylvania, 2019Heat Advisories in Delaware, 2019Every heat advisory in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.